A Personal Rapid Transit (PRT) vehicle, or driverless electric pod car, which transports students between parking areas and the institute, is seen at the Masdar Institute of Science and Technology in Abu Dhabi, United Arab Emirates, on Wednesday, Jan. 5, 2011. Masdar, Abu Dhabi's government-backed renewable energy company, is on track to develop a clean-energy city on time and intends to maintain its current level of spending, its chief executive officer said. Photographer: Duncan Chard/Bloomberg via Getty Images
